
is manifestly gauge invariant; here we have denoted \({\rm d}^{3|2}z ={\rm d}^3 x {\rm d}^2\theta \) .
In the flat-superspace limit, the action (REF ) reduces to the one given in [1]}, [2]}.
On account of the two equivalent forms of \(\mathfrak {W}_{\alpha (n)}(H)\)  in (REF ), it is also symmetric in the sense analogous to (REF ).
Since \( H^{\alpha (n)} \)  and \(\mathfrak {W}_{\alpha (n)}(H) \)  are primary superfields of dimensions
(REF ) and (REF ) respectively, the action (REF ) is superconformal.
